Zilmet zhp302bc Well Pressure Tank 79.3 Gal Diaphragm

Product Description

The ZILMET zhp302bc is a 79.3-gallon pre-pressurized diaphragm well pressure tank designed for potable water systems. It regulates system pressure, reduces pump short-cycling, and protects downstream components by maintaining a consistent pressure cushion between pump cycles. A seamless butyl diaphragm separates the air and water chambers, preventing air migration and waterlogging. The carbon steel shell carries a corrosion-resistant powder-coated finish and is rated to 150 psi maximum operating pressure with a factory precharge of 38 psi. A bottom-mounted 1-1/4 inch NPT connection simplifies integration into existing supply piping. Licensed plumbers and water systems contractors install this tank in large residential and light commercial well pump systems.

The zhp302bc is suited for high-drawdown applications where a smaller tank would cause excessive pump cycling. Its 79.3-gallon total volume delivers a substantial drawdown capacity, making it appropriate for multi-fixture residences, light commercial facilities, irrigation systems, and other installations with elevated demand. The stand-mount configuration allows the tank to be positioned vertically on a flat mechanical room floor without additional mounting hardware. The 24-4/5 inch overall diameter must be accounted for during rough-in planning in confined equipment rooms.

Key Features

• 79.3-gallon tank volume with high drawdown capacity for demanding well pump applications
• Butyl diaphragm creates a sealed air-water barrier that resists air migration and waterlogging
• 150 psi maximum pressure rating with 38 psi factory precharge
• Bottom-mounted 1-1/4 inch NPT connection for straightforward plumbing tie-in
• Carbon steel shell with powder-coated finish for corrosion resistance
• 5-year manufacturer warranty

Compatibility

Designed as an OEM-style replacement or new-installation well pressure tank for large residential and light commercial potable water well pump systems requiring a pre-pressurized diaphragm tank with a 1-1/4 inch NPT bottom connection.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the well pump and relieve all system pressure before disconnecting or connecting the tank. Verify the tank precharge pressure matches the system cut-in pressure setting on the pressure switch before placing the system back in service. The tank must be installed in a location that is not subject to freezing, as temperatures below 32 degrees F can damage the diaphragm and shell.

Technical Specifications

• Tank Volume: 79.3 gallons
• Maximum Operating Pressure: 150 psi
• Precharge Rating: 38 psi
• Maximum Operating Temperature: 210 degrees F
• Connection Size: 1-1/4 inches
• Connection Type: NPT
• Overall Diameter: 24-4/5 inches
• Shell Material: Carbon Steel
• Diaphragm Material: Butyl
• Weight: 114 pounds
• Color: Blue and Gray
• Warranty: 5 Years

Standard Information

• Brand: ZILMET
• Manufacturer Part Number: zhp302bc